Which number has a thousands digit of 9?
To solve this problem, we will check each number from the list of given choices to determine which one has a thousands digit of 9.
The thousands digit is the fourth digit from the right in a whole number. Let's examine each option provided:
- Choice 1: 15,691
Here, the digits from the right are: 1 (units), 9 (tens), 6 (hundreds), 5 (thousands). The thousands digit is 5, not 9.
- Choice 2: 23,954
The digits from the right are: 4 (units), 5 (tens), 9 (hundreds), 3 (thousands). The thousands digit is 3, not 9.
- Choice 3: 19,840
The digits from the right are: 0 (units), 4 (tens), 8 (hundreds), 9 (thousands). The thousands digit is 9, which matches our requirement.
- Choice 4: 90,001
The digits from the right are: 1 (units), 0 (tens), 0 (hundreds), 0 (thousands). The thousands digit is 0, not 9.
Based on the analysis, the number 19,840 has a thousands digit of 9. Therefore, the correct choice is 19,840.
Therefore, the solution to the problem is 19,840.